Bar support and spacer for concrete-reinforcements.



H. H. LAMPERT.

BAR SUPPORT AND SPACER FOR CONCRETE REINFORCEMENTS.

APPLICATION FILED 0c.14,|912.

Patented Dec. 10, 1918.

OFFICE.

HENRY H. LAMPERT, OF CHICAGO, ILLINOIS BAR SUPPORT AND SPACER FORCONCRETE-REINFORCEMENTS.

Specification of Letters Patent.

Patented Dec. 10, 1918.

Application filed December 14, 1917. Serial No. 207,114.

To all whom it may concern:

Be it known that I, HENRY H. LAMPERT, a citizen of the United States ofAmerica, and a resident of Chicago, county of Cook, and State ofIllinois, have invented certain new and useful Improvements in BarSupports and Spacers for Concrete-Reinforcements, of which the followingis a specification.

The main objects of this invention are to provide an improvedconstruction and arrangement of bar supporting devices for use inconcrete reinforcements whereby a plurality of bar supporting means areconnected together in spaced relation so that they may be quickly andconveniently placed on the falsework in properly alined positions toreceive the bars preparatoryto pouring the concrete; to provide animproved form and arrangement of the bar clamping and spacing means; toprovide an improved form of supporting means for said spacing andclamping means; and to provide an improved manner of securing togetherthe separately formed supporting-means and spacing-and-clamping-means.

An illustrative embodiment of the invention is shown in the accompanyingdrawings, in which-- Figure 1 is a perspective view of a bar supportingand spacing device constructed according to this invention.

Fig. 2 is a fragmentary view showing the clamping-and-spacing meanssecured to the same form of supporting means shown in Fig. 1 butdifferently arranged with respect to the strip.

Fig. 3 is a similar view of a slightly modified form of supportingmeans.

Fig. 4 is a view showing still another arrangement of, the form ofsupporting means shown in Fig. 1.

Fig. 5 is a' perspective view of one of the supporting means separatefrom the spacin -and-clamping means.

ig. 6 is a perspective view of the form shown in Fig. .1, with theclamping means bent over a bar.

In arranging reinforcing bars for concrete construction it is desirableto have the supports uniformly spaced apart transversely of the lengthof the bars and alined longitudinally thereof. In order to accomplishthis Withoutinvolving the loss of time and incurrin additional expenseincident to marking o the position for eacltmlam-ping device on thefalsework and fastening it thereto, the clamping means may preferably becombined with suitable spacing means whereby said clamping means arespaced apart in series or groups. In this condition, bar clamping meansmay be very quickly arranged on the falsework, and only one or twofastening means are required to secure a plurality of clamping means intheir proper positions. Various forms of 'clamping means and spacing andsupporting means have been provided, some of which are shown in mycopending applica? tions Ser. No. 108,913, filed July 12, 1916, and Ser.No. 202,439, filed November 17, 1917. Many of the constructionsheretofore used or proposed are objectionable because of the difficultyor expense to manufacture, or their failure to stand up under extremeconditions of use. Therefore,'the present invention contemplates theproduction of a combined bar support and spacing means which is simplerin construction and less expensive to manufacture than any of the formsheretofore proposed or used. The construction .herein shown involves theuse of a spacing strip having formed therein at intervals along thelength thereof a pl'urality of clamping means which are supported abovethe falsework on which the concrete is to be poured, by a plurality ofseparately formed supporting members secured to said strip also atintervals along its length.

The several modifications herein shown .embody the same generalconstruction complurality of longitudinally disposed fingers 2 formedtherein and adapted to be struck prevents them from becoming displacedwhen subjected to excessive strains. The strip 1 is also provided withnotches or recesses 5 extending inwardly from the opposite edges thereofand also formed in pairs preferably adjacent the fingers 2.

Each of the supporting members 3 as herein illustrated is formed fromsheet metal so as to provide a seat 6, depending legs 7 and upwardlydisposed lugs 8. The seat 6 and depending legs 7 constitute asubstantially inverted U-shaped chair, and the lugs 8 are preferablylocated at diagonally opposite sides thereof.

The parts thus formed are assembled by setting the lugs 8 disposed asshown in Fig. 5 into the notches 5 of the opposite sides of the strip 1with the strip resting upon the seat 6. The lugs 8 are then bent down soas to lock the supporting members to the spacing strip. A plurality ofthe supporting members are thus supported in a predetermined spacedrelation along the strip, and said supporting members may be set on thefalsewo'rk in the desired arrangement with very little trouble andlabor.

In the embodiment shown in Fig. 2, the legs 7 of the supporting member 3are disposed longitudinally with respect to the strip 1 and theapertures 5 are necessarily differently arranged from those shown inFig. 1.

In the embodiment shown in Fig. 4, the lugs 8 do not engage aperturesformed in the strip 1, but are bent around the opposite sides thereof soas to allow shifting of the supporting member along the length of thespacing strip.

Apertures 9 are formed at points along the spacing strip 1 so that aseries of the supports may be nailed in position on the falsework by afew nails or other fastening means.

The reinforcing bars 4 are placed between the arms 2 so as to rest uponthe strip 1 directly above the seats 6. The arms are then struck up andbent over the bars as shown in Fig. 6, so as to firmly clamp said barson the spacing member above the falsework.

It will be understood that numerous deterlocking engagement with theparts on said strip.

2. As an article of manufacture, a structure for use as a bar supportingdevice for concrete reinforcements, comprising a strip,

bar clamping means fixed thereon, and sep arately formed supportingmeans for said strip, said strip and supporting means having lugs andslots formed thereon, said supporting means being assembled on andsecured to said strip by passing said lugs into said slots and bendingthem over.

3. As an article of manufacture, a structure for use as a bar supportingdevice for concrete reinforcements, comprising a strip having recessesformed therein, bar clamping means fixed thereon, separately formedsupporting means, and lugs formed on said supporting means, said meansbeing assembled on and secured to said strip by passing said lugsthrough said recesses and bending them over onto said strip.

4. As an article of manufacture, a structure for use as a bar supportingdevice for concrete reinforcements, comprising a strip having recessesformed therein, bar clamping means fixed thereon, and separately formedsupporting means for said strip each comprising a depending leg andupstanding lugs, said means being assembled on and secured to said stripby passing said lugs into said recesses and bending them over onto saidstrip.

5. As an article of manufacture, a structure for use as a bar supportingdevice for concrete reinforcements, comprising a strip having recessesformed therein, bar clamping means fixed thereon, and separately formedsupporting means comprising a pair of depending legs connected by atransverse part, and upwardly disposed lugs located at diagonallyopposite edges of said transverse part, said lugs engaging said recessesand coacting therewith for securing said supporting means to said stripand bar clamping means.

6. As an article of manufacture, a structure for use as a bar supportingdevice for concrete reinforcements, comprising a strip having recessesformed therein, bar clamping means comprising a pair of fingers .onallyopposite edges of said transverse part, formed in said strip and adaptedto be said lugs engaging said recesses and coactstruck up and bent overa bar for clamping ing therewith" for securing said supporting 10 saidbar on said strip, and separately formed means to said strip and barclamping means.

5 supporting means comprising a'pair of de- Signed at Chicago thisllth'day of Dec.,'

pending legs connected by a transverse part, 1917. t and upwardlydisposed lugs located at diag- HENRY H. LAMPERT;

